Put a checkmark besides the examples of chemical changes. Electrolysis - the process which passes a strong electrical current through water, causes it to decompose into the constituent elements of oxygen and hydrogen.
The jar of water collected from the Great Salt Lake is left open in an arid environment. The water evaporates and leaves solid salt crystals.
The paper clips left in the salamander enclosure change color, malleability, and texture as it rusts.
In the presence of oxygen, inflamed gasoline gives off heat, light, and carbon dioxide.